WSP08420

• File Number: 8240.200.14.D
• Description: UCRBRIP Biology Committee
• State: CO
• Basin: Colorado Mainstem
• Date: 1/1/1995
• Author: CWCB
• Title: Biology Committee Review of Scopes of Work
• Water Supply Pro - Doc Type: Report/Study

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No: f...:>Ev..)
(for MC use)

RECOVERY IMPLEMENTATION PROGRAM
FOR THE ENDANGERED FISH SPECIES
THE UPPER COLORADO RIVER BASIN

FY-1995
SCOPE-Of-WORK
RESEARCH PROPOSAL

Lead Agency:

U,S Fish and Wildlife Service,
CRFP, Verna I

Category (check one):
__ Ongoing project
X- Requested new start
__ Unsolicited project
Outside funding

David Irving and Tim Modde
Colorado River Fishery Project

Address: Co I orado Ri ver Fi sh Project
266 N, 100 W., Su ite 2
Vernal, UT 84078

Submitted by:

Date: 12 April 1994

I, Title of Proposal:
Develop Flow Recommendations for endangered fishes in the White River

II, Relationship to RIPRAP:

This study relates to the White River action plan element A,I of
assessing habitat and passage need above Kenney Reservoir under the
restore habitat section,

The White River was impounded by Taylor Draw Dam in 1985 creating Kenney
Reservoir, Studies conducted before 1985 documented squawfish use of
the White River above the dam, The dam blocked squawfish movement into
available habitat upstream and reduced the amount of historic home-range
in the White river by 32%, The restriction of upstream movement has
resulted in the stockpiling of squawfish immediately below the dam, As
a consequence the density of squawfish in the area below the dam are
some of the highest in the Upper Colorado River Basin,

The highest density of squawfish in the White River occurred within the
first 1 rkm below Taylor Draw Dam in the fall of 1992 and spring of
1993, The squawfish that returned to the White River after spawning in
the fall of 1993 initially stockpiled directly below the dam, but then
redistributed themselves downriver 4-5 rkm. The reason for the
divergent movement pattern is unknown, The question has arisen as to

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